261784551

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{349}}^1\times {\mathrm{1553}}^1$

素因数の和:1935

約数の個数: 32

約数和(自身を含む): 417715200

約数和(自身を除く): 155930649

約数列:

[1, 3, 7, 21, 23, 69, 161, 349, 483, 1047, 1553, 2443, 4659, 7329, 8027, 10871, 24081, 32613, 35719, 56189, 107157, 168567, 250033, 541997, 750099, 1625991, 3793979, 11381937, 12465931, 37397793, 87261517, 261784551]

約数ペア:

[(1, 261784551), (3, 87261517), (7, 37397793), (21, 12465931), (23, 11381937), (69, 3793979), (161, 1625991), (349, 750099), (483, 541997), (1047, 250033), (1553, 168567), (2443, 107157), (4659, 56189), (7329, 35719), (8027, 32613), (10871, 24081)]